74106978 has 48 divisors (see below), whose sum is σ = 171867744. Its totient is φ = 21053440.

The previous prime is 74106971. The next prime is 74106979. The reversal of 74106978 is 87960147.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74106971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288226 + ... + 288482.

It is an arithmetic number, because the mean of its divisors is an integer number (3580578).

Almost surely, 2^74106978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74106978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85933872).

74106978 is an abundant number, since it is smaller than the sum of its proper divisors (97760766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74106978 is a wasteful number, since it uses less digits than its factorization.

74106978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 74106978 is about 8608.5409913643. The cubic root of 74106978 is about 420.0358586164.

It can be divided in two parts, 741069 and 78, that added together give a palindrome (741147).

The spelling of 74106978 in words is "seventy-four million, one hundred six thousand, nine hundred seventy-eight".